Nitrosyl cyanide
Nitrosyl cyanide
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Nitrosyl cyanide

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Nitrosyl cyanide

Nitrosyl cyanide, a blue-green gas, is the compound with the molecular formula ONCN. The compound has been invoked as a product of the oxidation of cyanamide catalyzed by the enzyme glucose oxidase.

The structure of nitrosyl cyanide is planar. It is strongly bent at the internal nitrogen, analogous to the structure of nitrosyl chloride. The C-N-O angle is 113°. The NCN angle is 170°.

The compound can be created by the reaction of nitrosyl chloride and silver cyanide at low temperatures. It is not typically isolated, but trapped by Diels-Alder reactions, e.g. with butadiene. Cycloadditions occur across the N=O bond. It forms a reversible adduct with 9,10-dimethylantracene.

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